Just had a thought... I'd forgotten that one of the top guy's in that forum is actually a member here in our forum. I'll pm him a message and hopefully he'll have a look see.
Yeah Hopefully I can get one of my dads friends to test out my gpu in a build of his, he's the kinda guy that would most likely nail whether or not I have a faulty gpu.
I just got another 'black screen' This is the third or fourth time it's happened. My screen went blank and my bios splash screen came up, then booted into windows normally.